Q5 of 18 Page 70

In each picture below, the explanation of the green part is given. Calculate in each, the probability of a dot put without looking to be within the green part.

A regular hexagon formed by two overlapping equilateral triangles.


The figure is given below:



Here,


The shaded area is of the big triangle.


Hence, the area will be of the bigger triangle.


Hence, the probability is 2/3.


More from this chapter

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3

In each picture below, the explanation of the green part is given. Calculate in each, the probability of a dot put without looking to be within the green part.

Circle exactly fitting inside a square.


 4

In each picture below, the explanation of the green part is given. Calculate in each, the probability of a dot put without looking to be within the green part.

A triangle got by joining alternate vertices of a regular hexagon.


 1

Rajani has three necklaces and three pairs of earrings, of green, blue and red stones. In what all different ways can she wear them? What is the probability of her wearing the necklace and earrings of the same colour? Of different colours?

 2

A box contains four slips numbered 1, 2, 3, 4 and another box contains two slips numbered 1, 2. If one slip is taken from each, what is the probability of the sum of numbers being odd? What is the probability of the sum being even?